1221222294 has 48 divisors (see below), whose sum is σ = 2697836544. Its totient is φ = 399159600.

The previous prime is 1221222287. The next prime is 1221222341. The reversal of 1221222294 is 4922221221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 241597 + ... + 246599.

It is an arithmetic number, because the mean of its divisors is an integer number (56204928).

Almost surely, 2^1221222294 is an apocalyptic number.

1221222294 is an abundant number, since it is smaller than the sum of its proper divisors (1476614250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1221222294 is a wasteful number, since it uses less digits than its factorization.

1221222294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5273 (or 5270 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 1221222294 is about 34945.9911005540. The cubic root of 1221222294 is about 1068.8864573482.

The spelling of 1221222294 in words is "one billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred ninety-four".